Freckles may be hereditary, and exposure to ultraviolet light, is also an important factor in causing skin damage. Freckles are relatively common in clinical practice, usually occurring on the face, especially the nose and cheeks, and are pigmented disorders. The causes of freckles are relatively clear, mainly including heredity and sun exposure. There is obvious family history of freckles, such as parents and grandparents in the family have freckles, and their children are more likely to have freckles in their skin under the influence of genetic factors. The genetic factor is also the main reason for the development of freckles. Patients with freckles usually do not pay attention to skin care, and if they are often exposed to sunlight, ultraviolet rays and X-rays, it may lead to local pigmentation. The shape of the pigmentation may become bigger and the number may increase gradually. Freckles will not affect your health, but they will affect your aesthetics. If you have cosmetic needs, it is recommended to go to the dermatology department of regular hospitals and give medication or physical therapy, such as chemical peeling, liquid nitrogen freezing, and laser treatment, in combination with the doctor’s advice, which can remove the pigmentation.